Abstract
The electron donor properties of Cu+ and the ability to activate adsorbed molecules by π-back donation of d electrons of Cu+ to π* antibonding orbitals of a molecule increases in the order: CuMCM-41 < CuZSM-5 < CuBeta. It was evidenced by IR studies of CO, N2, and NO adsorption. TPD-IR experiments provided information on heterogeneity of Cu+ sites in all the zeolites studied. The experiments on the reduction (in H2) and oxidation (in air) evidenced that the ability of Cu+ to reduction and oxidation depends on zeolite structure. The ability to reduction increased in the order: CuMCM-41 < CuBeta < CuZSM-5, whereas the ability to oxidation increased in the opposite order.
Original language | English |
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Pages (from-to) | 1655-1660 |
Number of pages | 6 |
Journal | Studies in Surface Science and Catalysis |
Volume | 154 B |
DOIs | |
Publication status | Published - 2004 |
MoE publication type | A1 Journal article-refereed |
Keywords
- CuBeta
- CuMCM-41
- CuZSM-5
- IR spectroscopy